Research On Laboratory Monitoring System And Its Key Technology

With the continuous development of economic and scientific as well as the improvement of people’s secure awareness, the social demand for security monitoring is increasing. How to meet people’s demands for monitoring and to bring the best service to the condition of minimizing the cost become contemporary research directions of the monitoring system. Security monitoring technology is constantly innovative development and its function more and more powerful. Now security monitoring gradually move towards miniaturization, low power consumption, intelligent and practical. The purpose of this article is to design a cheap and practical embedded laboratory monitoring system which uses by those in need of security monitoring with low cost. Of course this design of monitoring system can be extended to the smart home.This system is base on modular design. It is compose of administrator mobile terminals, the central node and multiple laboratory monitoring fronts. We can add a server to manage multiple central nodes above the central node if in need. The wireless network topology is an enhanced star network with routing transmission. The central nodes receive alarm information from various fronts and notify the administrator by SMS or MMS and it receives and implements the order issue of the administrator via SMS. In addition, the central node also provides people machine interaction for administrator directly control and management of the entire monitoring system. Monitoring front, on the one hand, acquires laboratory temperature, humidity, dangerous gas density, door control information, image information and infrared sensor information. Then monitoring front analyzes the above information and detected if there is a moving object. If find a moving object, it will send an alarm message to the central node and transmitting the JPEG image information. If the other data anomalies, it will generated alarm. On the other hand monitoring front executes an order issue by the central node.In order to design a cheap and practicality monitoring system, this paper focuses on the wireless network transmission protocol and image acquisition compressed two key technologies.1. To design a wireless network transmission protocol that can transmit image information in a low-power and low transmission rate condition. The protocol improves the sliding window protocol and flexibility use point of coordination and distributions, so it can more fully utilize the network channel resource.2. To design a module which set the camera to initialize, the image data acquisition, image compression and the memory sharing control in it based on FPGA. The design of the one-dimensional image compression core fast DCT achieve JEONG algorithm. The design of multiplication module and pipeline time has adjustments and improvements to make the whole image compression module using less number of devices, better overall performance and lower cost.We can design a cheap and practical monitoring system by using the above technology. The monitoring system’s power consumption is less even can use battery power and it is powerful management consideration managers and worldwide roaming surveillance monitoring system management. No surprise this design will be more in line with the monitoring requirements of ordinary laboratory.